Foot and ankle strengthening device



FIG. 1 is a perspective view of a foot and ankle strengthening device;

FIG. 2 is a top view of the foot and ankle strengthening device of FIG. 1;

FIG. 3 is a side view of the foot and ankle strengthening device of FIG. 1;

FIG. 4 is an opposite view of FIG. 3;

FIG. 5 is a front view of the foot and ankle strengthening device of FIG. 1;

FIG. 6 is a rear view of the foot and ankle strengthening device of FIG. 1; and,

FIG. 7 is a bottom view of the foot and ankle strengthening device of FIG. 1. 

CLAIM The ornamental design for a foot and ankle strengthening device, as shown and described. 